TPMS Fault Defeat Installation

Like most modern cars, Astons feature a tire pressure monitoring system (TPMS). The concept of the system is simple: Each wheel has a sensor that informs a central module of its tire pressure. When the pressure for a tire gets too low, the system sends a warning to the car, which manifests as a "Low Tire Pressure" warning. The sensors contain batteries, and when the batteries die, the TPMS module sends a fault code that gets displayed in your gauge cluster.

Unfortunately for us Aston owners, the sensors used for the TPMS in our cars use batteries that aren't serviceable - they're epoxied into the sensors. That means when the battery dies, you need to get a whole new sensor... and they aren't cheap. The "best" solution is to bite the bullet and pay to have new sensors installed (you might as well do them all at the same time). But for some of us, this isn't what we want to do. My car, for example, is fitted with aftermarket wheels that the TPMS sensors don't fit on, so I can't use the TPMS at all. Luckily for me, my a buddy of mine (who just so happens to be an Aston Martin Master Technician) came up with a solution: A wiring harness that prevents the TPMS module from sending fault codes to the car.

DISCLAIMER: As always, follow all safety protocols. Don't undertake this task if you aren't comfortable with it and fully understand it. You are ultimately responsible for anything you do. Neither Redpants, LLC or myself is responsible or liable for anything that may occur.

WARNING: By using this product, you acknowledge and understand that your TPMS system will no longer be able to notify you of tire pressure warnings as originally designed.

Step 1First you need to locate the TPMS module. You can see it tucked up underneath the glovebox:

Reach up from underneath the module to feel the backside of it. You'll feel the wiring harness coming from the back of the module. Trace this a short distance and you'll come to the plug. Disconnect that plug from the car's wiring harness.

Step 2Insert the TPMS Fault Defeat in between the TPMS plug and the car's wiring harness. It only fits one way, so you don't have to worry about plugging it in incorrectly.

Step 3Turn on the car and make sure the TPMS fault indicator is not present in the gauge cluster.

REMEMBER: Your TPMS is no longer able to alert you if your tire pressure is low. You'll need to check your tire pressures yourself.